add feature flag

microsoft · Apr 16, 2024 · ed87f5a · ed87f5a
1 parent ad7c1d5
commit ed87f5a
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diff --git a/localtypings/pxtarget.d.ts b/localtypings/pxtarget.d.ts
@@ -506,6 +506,7 @@ declare namespace pxt {
         timeMachineQueryParams?: string[]; // An array of query params to pass to timemachine iframe embed
         timeMachineDiffInterval?: number; // An interval in milliseconds at which to take diffs to store in project history. Defaults to 5 minutes
         timeMachineSnapshotInterval?: number; // An interval in milliseconds at which to take full project snapshots in project history. Defaults to 15 minutes
+        adjustBlockContrast?: boolean; // If set to true, all block colors will automatically be adjusted to have a contrast ratio of 4.5 with text
     }
 
     interface DownloadDialogTheme {

diff --git a/pxtlib/toolbox.ts b/pxtlib/toolbox.ts
@@ -207,6 +207,8 @@ namespace pxt.toolbox {
      * concern since we only cache colors that are used in the toolbox.
      */
     export function getAccessibleBackground(color: string) {
+        if (!pxt.appTarget?.appTheme?.adjustBlockContrast) return color;
+
         if (!cachedAccessibleColors[color]) {
             cachedAccessibleColors[color] = pxt.getWhiteContrastingBackground(color);
         }